tantan tantan tantan
tantan tantan tantan .
t̪̻ ä n t̪̻ ä n WORD_BOUNDARY t̪̻ ä n t̪̻ ä n WORD_BOUNDARY t̪̻ ä n t̪̻ ä n WORD_BOUNDARY
t a n t a n WORD_BOUNDARY t a n t a n WORD_BOUNDARY t a n t a n WORD_BOUNDARY . WORD_BOUNDARY